Decarbonizing and priming device.



F. SMITH.

DECARBONIZING AND PRIMING DEVICE.

APPLICATZON FILED FEB. 28, 9|?

Patented Dec. 4, 1917.

. L 5 V 1/ --4es J -15 ,E- J- a w J it ,nnonnnonrzrne Ann PBIMING nnvrcnfl' i {To all wiwm it may concern:

.Be 'it known that I, FRED SMITH, a citifz'en of the United States, residing t Stainford in the county of Fairfield and=State of.

Connecticut, have invented certain new and useful; Improvements w in Decarbonizing and {Priming Devices, 01 which the following is specification.

invention relates to devices for facili- 1Q tating the starting of hydrocarbon engines and forudecarbonizing the cylinders thereof when necessary or desired. The device is preferably adapted to perform both une-- shun siurrn, on sranrenn'ccnnnorrcu r.

tions, but me be used for one or the other 15, separately. 11 any case, it is a simple attachrnent' which is secured to the intake manifoldof an engine the device containing anozzle, the interior of Which is con- "j-nected. to the interior of a cylinder of the engine, so that when air is compressed in ;..the engine "cylinder by the cranking of the engine, it Will rush through the nozzle. Another passage, in the body of the device is connected .to the'fuel supply of the engine,

25, or-whenldesired', to a vessel containing decarlooi izing fluidi; and this passage opens into aspace surrounding the nozzle. Considering first the pruning functions; When the air rushes through the nozzle referred to,

# itcausesthe, gasolene or other iiuid cornbustiblev to which the second passage is cong--.i 1ectedto be sucked up into space surorounding the nozzle the latter operating on z the injector principle. l? gaso caught up ,by-

IL c rapid current ,thorougl1ly mingled therewith in ate 1 condition;- in a suitably formed b through-which the stream of air passes from lithe. .nozale the. combustible spray thus 40 formed passing into the manifold. on": the en- Q- gine, from Which point it is drawn into a 1 cylinder or cylinders and subsequently coinvpressed andignited I auxiliary device to be put into operation, is When it is desired to prime the engine, by the movement of a valve for opening or closingthe gasolene and air supply.

I have also found, stated, that the described device may, with slight changes be" 1 used for decarbonizing the engine cylinders when desired. That is to say, if the pas sage in the device which I have described .asconnected to the gasolene supply of the engine be connected instead to a supply of suitable decarbonizing fluid, such as Warm Water or alcohol, and the valveopened, after This is intended as an iii ci ric s ecification ofletters Patent tf m rn g'gg e Application fi led February as, 3.917. sernuno. 151,515. t it containing heated Water or alcohol or other decarbonizer, this tube leading into the pas sage to which the connection from the gasolene supply is connected. In this construction, the tubejifor drawing up the decarbonizing fluid and the connection extending to the gasolene supply line are both provided with valves, one of which may be closed While the other is open so that the device Will draw up either fuel or dccarbonizing fluid in accordancewi'th \vhether it is desired to prime or decarbonize the engine.

Other objects of my invention include details of construction, including a springpressed check valve in the passage leading from the mixing chamber of the device into the intake manifold of the engine. I find that a better and stronger stream is projected into the manifold when this vali e is used than otherwise.

In order that a clearer understandingoi my invention may be had attention is hereby directed to the accompanying drawings forming part'of tlii application and illustrating certain M sediments t coi T an ill the drawings, Figure lirepresents a partial side elevation of an engine showing my priming andldecarboni'zingulevice mounted upon the manifold thereof and suit-ably connected, Fig. 2 a central v- *tical section taken through the device, l-"ig's. and i are lit) threaded opening in the manifold, a lock nut 5 prreferably being additionally used.

' he casting 1 has passages 6 and 7 extending into the same from one surface thereof, these passages being connected respectively to the interior of a cylinder and to the gasolene supply (or decarbonizing fluid supply, or both, as stated). To this end,-passages 6 and 7 have connections 8 and 9 screwed into their Outer ends to which are secured tubes 10 and 11. Tube '10 is connected to the interior of any cylinder by any convenient opening therein, as stated, such, for example, as the spark plug 12. Tube 11 may be connected to the line of gasolene supply, preferably by :connecting it by means of a T 13 in the pipe l lextending from the gasolene supply tank (not shown) to the carboreter 15.

vPassages (S and 7 are opened or closed by means of a rotary tapered valve 15*, which extends across the passages and is held in position by a spiral spring 16. A handle 17 is secured to the valve and may be oscillated between stop pins 18 to open or close the valve. The handle may extend to any point convenient for the operator and serves to open both passages 6 and 7 simultaneously, as shown in Figs. 3 and 1, when it is swung away from its normally closed position.

The nozzle of the injector type is shown at 19 and may be provided with screwthreads and screwed into position in a recess appropriately threaded to receive the same. The outer end of member 19 is solid and adapted to fill the opening. The inner end'of member 19 is provided with a tapered located. A recess 29 is formed in horizontal. ahnement with all 25, this recess consitutdelivery portion 20, which is located in a converging passageway 21 extending through the cylindrical portion 4: of the device toward the inter'ior of the manifold.

The-passageway 6 for the compressed air leads through a peripheral groove 22, formed about member 19, to an opening 23 extending into the interior thereof, which opening connects with the axial bore 2 1, which extends from that point through the nozzle 20. The passage 7 for the liquid fuel opens into the space. surrounding nozzle 20.

A check valve shouldpreferably be interposed in the path of the liquid fuel drawn up through passage 7. llly preferred construction for this purpose is shown in the drawings and comprises a ball valve 25 pressed against a seat by a spring, the opposite end of which rests against a screw plug 28, which may be used to close the recess in which the ball and spring are ing part of the passage 6 for the compressed air. A piston 30 is slidably mounted in recess 29 and has a stem 31, the opposite end of which is adapted to press against ball 3 stem 31 being slidably mounted in a horiin lanaizontal cylindrical passage extending" be tween recess 29 and the recess in which ball is'monnted. The outer end of recess 29 may be closed by a-screw plug 32. The pas sage 7 proper terminates at the recess in which ball 25 is seated, but a continuation of the same 7" extends from the rear surface of seat 26 to the annular space surrounding nozzle 20.

When valve -15 is open and the shaft of the engine isrotated as by cranking the same, compressed air will flow through passage 6 as soon as compression takes place in the cylinder to which spark plug 12 is attached. As this air passes through recess 29 it presses plunger 30 to the left, referring to Fig. 2, so that ball'25 is moved away from its seat, opening a passageway between passages 7 and7'. The air rushing through the bore 2a of the injector nozzle causes a powerful suction in the space surrounding the nozzle, drawing up gasolene through passages 7, 7 the mingled spray of air and gasolene being thrown into the manifold with considerable force. Preferably the atomized stream is not injected axially of passage 21 into the manifold, as it would thereby be directed. against the rear wall of the manifold. I prefer to close the end of passage 21 with a screw plug 33 and cause the spray to be directed in opposite directions through passages 34:, 34:, which cross passage 21 at a right angle, as shown in Fig. 5. The spray will thereby be directed in opposite directions lengthwise of the two branches 2 and 2 of the manifold 2, so that the same will be drawn into any cylinder in which suction is taking place.

In my preferred construction, as stated, I provide a springpressed check valve in the delivery opening of the device. This preferably takes, the form of a ball valve 35 which is pressed by. a spring 36 into contact with a seat 37, the spring being coiled about a stem secured to the plug 33 and adapted to form a stop for ball 35. Ball 35 When resting against its seat is a short distance in advance of the delivery end of nozzle 19, the space 38 between the ball and the'end of the nozzle constituting ,115

a mixing chamber in which the air passing through the nozzle and the fluid drawn up into space 21 surrounding the same are mingled. I have found that when the springpressed valve 35 is used, a stream or jet of greater force is thrown into the manifold than when no such check valve is used.

The device has been so far described in detail as adapted forpriming the on gine. As stated, it may be used for decarbenizing the engine cylinders, when desired, by simply connecting the passage 7 with a supply of decarbon'izing fluid instead of the fuel supply as shown. I prefer, however, to combine the two functions x I ,ln onea e llluspro vided in an enlargement 01"" the'piEiQ-M. "Al

so, the 'pipepo'nne'ction 11 extending to fuel supply line 14 is provided with a VJ' VVhen" the device is to be used r1 rimingvaiveis is closed and valve oen'ed. "When, however, it is desired e device for decarbonizing the cyltensesisi closed, valve 43 is open tl "lower en'd'of pipe 42 is inserted in vsssersuen as the can 46 containing water,

: alcohol, or other desired decarbonizing fluid.

w en us'ed,'-it is preferable that the aine should berhot, in which case it is 1mndediately turnedto steam by the hot air rushing from the engine cylinder through nozzle 19, assuming that the engine is well llea'ted when the device is used for decarbonizing. A short application of the devicatcr, thus purpose is sufiicient to thoroughly cleanse the interiors of the cylinders.

Whether the ball valve is used or not, a check valve should be employed in passage 7, to positively prevent the possibility of air from the nozzle pressing down into the fuel supply. lhis is shown as a simple ball 47 resting on a seat 48 in connection 9. Any downward pressure in passages 7, 7 forces this ball against its seat, Whereas it is lifted to permit the upward flow of fuel when suction is created in passages 7, 7, by the rush of air from the nozzle past ball into the manifold.

The use of the injector rinciple as described renders thedevice e' cient, as stated, both for facilitatingthe starting of an engine when cold and for decarbonizing the same when hot. The body portion. 19 of the injector nozzle is screwed into place to fit snugly against a shoulder formed in the casting, as shown, to prevent leakage'of air past the same and the check valve in passage 7, of which the form described is pre ferred, serves to prevent passage of gasolen-e past the same at all times except when compressed air is rapidly passing through the injector nozzle, since the ball 25 is firmly seated against its seat except at such times as the pressure in recess 29 overbalortion ada ted to be inserted in an 0 ening in an intake manifold, and having a converging chamber extending through said offset portion, a nozzle mounted in said body having a taperedde'livery end extend ean'gacntoc said chamber, saldnioazle having .:'nni trial,boret eirtending, rein; Siii'fliifliil to a :hpoi to -he -rear thereof,.;a-nd therecor r mun oati11g: with a;1 per ahcral groove in the body, said body "a tending i from a "gboovel'anc;

0 liver 1' surface thereof ;.to said pace surrounding the do p nozzle respectively, and a valveino'unted in said body osirnultaneously close and open said passages, substantially as set forth,

2. In an attachment for hydrocarbon engines, a body adapted to be attached to an intake manifold, and having delivery passage therein adapted to deliver into the manifold, a nozzle mounted in said body with its delivery end in said passage, with a space constituting part of said delivery passage surrounding said end, said body having passageways extending from a surface thereoi into the interior of said nozzle and into said space respectively, with an urged space forming part oi said first igeway, means for closing and opening passageways, a check v lve additionally clr itrolling said second assageway, a spring normally holding said check valve in closed position, and apiston in said enlarged space, connected to said check valve, and adapted to move said valve to open said second passageway when sufficient pressure exists in said first passageway to overcome said spring, substantially as set forth. a

3. In an attachment for hydrocarbon engines, a body adapted to be attached to an intake manifold and having a delivery nozzle adapted to deliver into the manifold with a vacuum chamber surrounding the nozzle and a mixing space between the delivery end of the nozzle and the m inif'old, passages adapted to lead compressed air into the nozzle liquid fuel or other liquid into the vacuum chamber, a valve for closing said second passage, means controlled by passage of compressed air through said first passage for opening said valve, and manual means for opening and closing said first passage, substantially as set forth,

i, In an attachment for primin hydroi thereof, an injector nozzle mounted within isaid body, and having a bore connected with said second tube, by a passage through said body, said body also having a passage con necting said first tube with a space surrounding the-nozzle and a delivery having passages-ex I space: between the nozzleand manifold, in

the delivery portion of said body, and manual valve means for controlling the fiow of compressed air and fuel into said body, substantially as set forth.

In an attachment for hydrocarbon engines, the combination of a body adapted to be'secured to an intakemanifold, With a dejector nozzle mounted within the body, having a tapered delivery end extending, into said chamber, said body having passages ex tending from a surface thereof to the interior of said nozzle and to thespace surrounding the delivery end of the nozzle respectively, connections for leading air from a cylinder of the engine, when compressed, into the passage leading into the nozzle, and liquid into the passage leadin to said space lay-suction, and valve means for controlling the flow of air and liquid, substantially as set forth.

6. In an attachment. for hydrocarbon engines, the combination of a body adapted to besecure'd to an intake manifold having a nozzle therein adapted to deliver into the manifold with a' chamber surrounding the nozzle and a mixing space between the delivery end of the nozzle and the manifold, a

set forth.

passage adapted to lead compressed air into Y the nozzle, and a passage adapted to lead fluid into the chamber surrounding the nozzle;. a pipe adapted to connect said second passage with a fuel supply, and a pipe adapted to connect said second passage With a supply of decarbonizing fluid, said pipes being provided Withvalves, substantially as 7. In an attachment for hydrocarbon engines, the combination. of a body adapted to be secured to an intake manifold, said body having a delivery passage therein positioned to deliver into an opening in the manifold, a nozzle having a delivery end extending into said passage, a spring-pressed check valve in said passage, adapted to be opened by pressure of fluid issuingfrom-said nozzle, said body having passages extending into the interior of said nozzle and into the space surrounding the delivery end of said nozzle respectively, and means for closing and opening said passages, substantially as set forth. v

This specification signed and witnessed this 26th day of February, 1917.

FRED SMITH.

Witnesses DYER SMITH, I. MoIN'rosn. 

